基于LabWindowsCVI的Rs232串口波形函数收发

#include <utility.h> #include <rs232.h> #include <ansi_c.h> #include <cvirte.h> #include <userint.h> #include "WaveReceive.h" char CharToHex(char c); void ConvertToHex(char hexdata[], int chardata); int CenterInRange(const double inputArray[], int numElements, double upper, double lower, double outputArray[]); static int panelHandle; static int baudrate = 0; static int comport = 0; static int checkbit = 0; static int databit = 0; static int stopbit = 0; static int status = 0; int lightflag=0; int hexshowflag =0; int logg; double receivetime=0; double min,max,rate; double sampsPerCycle,bufferSize,cyclesPerBuffer,frequency; char receivechar2[500]={0}; //****************************************************************************************// // 主函数代码 // //****************************************************************************************// int main (int argc, char *argv[]) { if (InitCVIRTE (0, argv, 0) == 0) return -1; /* out of memory */ if ((panelHandle = LoadPanel (0, "WaveReceive.uir", PANEL)) < 0) return -1; SetCtrlVal (panelHandle, PANEL_LED,lightflag); SetCtrlAttribute(panelHandle,PANEL_DECORATION_1,ATTR_FRAME_COLOR,VAL_DK_CYAN); SetCtrlAttribute(panelHandle,PANEL_DECORATION_2,ATTR_FRAME_COLOR,VAL_DK_CYAN); SetCtrlAttribute(panelHandle,PANEL_DECORATION_3,ATTR_FRAME_COLOR,VAL_DK_CYAN); SetCtrlAttribute(panelHandle,PANEL_DECORATION_4,ATTR_FRAME_COLOR,VAL_DK_CYAN); SetCtrlAttribute(panelHandle,PANEL_DECORATION_5,ATTR_FRAME_COLOR,VAL_DK_CYAN); DisplayPanel (panelHandle); RunUserInterface (); DiscardPanel (panelHandle); return 0; } //****************************************************************************************// // 串口区（Com information）代码 // //****************************************************************************************// int CVICALLBACK opencomport (int panel, int control, int event, void *callbackData, int eventData1, int eventData2) { switch (event) { case EVENT_COMMIT: if (lightflag == 1) { SetCtrlVal (panel, PANEL_LED, 0); SetCtrlAttribute (panel, PANEL_COMOPENBUTTON, ATTR_LABEL_TEXT ,"打开串口"); CloseCom(comport); lightflag =0; break; } else if (lightflag == 0) { //**************获取串口信息***************// GetCtrlVal(panel,PANEL_COMPORT_RING,&comport); GetCtrlVal(panel,PANEL_BAUDRATE_RING,&baudrate); GetCtrlVal(panel,PANEL_CHECKBIT_RING,&checkbit); GetCtrlVal(panel,PANEL_DATABIT_RING,&databit); GetCtrlVal(panel,PANEL_STOPBIT_RING,&stopbit); //**********根据上述信息打开串口***********// status = OpenComConfig(comport,"",baudrate,checkbit,databit,stopbit,32767,32767); SetCtrlVal (panel, PANEL_LED, 1); SetCtrlAttribute (panel, PANEL_COMOPENBUTTON, ATTR_LABEL_TEXT ,"关闭串口"); lightflag=1; if(status!=0) { MessagePopup("错误", "打开失败!"); SetCtrlVal (panel, PANEL_LED, 0); SetCtrlAttribute (panel, PANEL_COMOPENBUTTON, ATTR_LABEL_TEXT ,"打开串口"); lightflag =0; } } break; } return 0; } //****************************************************************************************// // 波形接收区（Wave receive）代码 // //****************************************************************************************// int CVICALLBACK ReceiveWave (int panel, int control, int event, void *callbackData, int eventData1, int eventData2) { switch (event) { case EVENT_COMMIT: /*** 获取波形信息 ***/ GetCtrlVal(panel,PANEL_MINVAL_NUMERIC,&min); GetCtrlVal(panel,PANEL_MAXVAL_NUMERIC,&max); GetCtrlVal(panel,PANEL_FREQUENCY_NUMERIC,&frequency); GetCtrlVal(panel,PANEL_SAMPSPERCYCLE_NUMERIC,&sampsPerCycle); GetCtrlVal(panel,PANEL_CYCLESPERBUFF_NUMERIC,&cyclesPerBuffer); bufferSize = sampsPerCycle * (unsigned long)ceil(cyclesPerBuffer); /*** 设置画波形X轴参数 ***/ rate = (frequency*bufferSize)/cyclesPerBuffer; SetCtrlAttribute(panel,PANEL_GRAPH,ATTR_XAXIS_GAIN,1.0/rate); logg = (int)log10(rate); SetCtrlAttribute(panel,PANEL_GRAPH,ATTR_XPRECISION,logg); /*** 触发时钟、获取并设置时钟信息 ***/ SetCtrlAttribute (panel, PANEL_RECEIVETIMER, ATTR_ENABLED, 1); GetCtrlVal (panel, PANEL_TIMENUMERIC,&receivetime); receivetime = receivetime/1000.0; SetCtrlAttribute (panel, PANEL_RECEIVETIMER, ATTR_INTERVAL, receivetime); break; } return 0; } /*** 时钟回调函||在每个时钟周期内接收一次数据，并产生一次波形 ***/ int CVICALLBACK ReceiveTimer (int panel, int control, int event, void *callbackData, int eventData1, int eventData2) { int i=0,t=0,len=0; int lenth=0; int flag=0; short int ptr[1000]={0}; double recievedouble[1000]={0}; switch (event) { case EVENT_TIMER_TICK: len=ceil(bufferSize ); lenth=GetInQLen(comport); if(lenth>3*bufferSize&&lenth<6*bufferSize) //读入的数据太多或太少都不进行处理 { ComRd(comport, receivechar2,lenth); /*** 判断标志位，对符合传送方协议标志（字头：0x1111,字尾：0x2222）的数据进行类型转换、画波形。否则清除输入队列 ***/ while(!flag) { if ((receivechar2[i]==0x11)&&(receivechar2[i+1]==0x11)&&(receivechar2[i+2*len+4]==0x22)&&(receivechar2[i+2*len+5]==0x22)) { flag=1; break; } else { i++; if(i>3*bufferSize) return 0; } } for(t=1;t<(bufferSize+2);t++) { ptr[t-1] =(*(short int*)(&receivechar2[i+2*t])); //将字符型数据转换成短整型 recievedouble[t-1]=ptr[t-1]/10000.0; // 还原数据到实型 } CenterInRange(recievedouble,bufferSize,max,min,recievedouble); DeleteGraphPlot(panel,PANEL_GRAPH,-1,VAL_DELAYED_DRAW); PlotY (panel,PANEL_GRAPH, recievedouble,bufferSize , VAL_DOUBLE, VAL_FAT_LINE, VAL_EMPTY_SQUARE, VAL_SOLID, 1, VAL_RED); } else { FlushInQ (comport); } break; } return 0; } int CVICALLBACK RangeCallback (int panel, int control, int event, void *callbackData, int eventData1, int eventData2) { double min,max; switch (event) { case EVENT_COMMIT: GetCtrlVal(panel,PANEL_MINVAL_NUMERIC,&min); GetCtrlVal(panel,PANEL_MAXVAL_NUMERIC,&max); if( min<max ) SetAxisScalingMode(panel,PANEL_GRAPH,VAL_LEFT_YAXIS,VAL_MANUAL,min,max); return 1; break; } return 0; } int CenterInRange(const double inputArray[], int numElements, double upper, double lower, double outputArray[]) { int i; double shift = (upper+lower)/2.0; for(i=0; i < numElements; i++) outputArray[i] = inputArray[i] + shift; return 0; } int CVICALLBACK StopCallback (int panel, int control, int event, void *callbackData, int eventData1, int eventData2) { switch (event) { case EVENT_COMMIT: SetCtrlAttribute (panel, PANEL_RECEIVETIMER, ATTR_ENABLED, 0);//停止触发时钟 //CloseCom (comport); break; } return 0; } //****************************************************************************************// // 文本接收区（Text receive area）代码